A Review of Waterborne Polyurethane Coatings and Adhesives with Polyester Polyol from Poly(Ethylene Terephthalate) Waste

Senra, Elaine M.; Silva, Ana L. N.; Pacheco, Élen Beatriz Acordi Vasques

doi:10.1007/s10924-023-02836-8

Cited by 6 publications

(3 citation statements)

References 144 publications

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“…They are also commonly used in the automotive and construction industries, as well as, in the production of industrial adhesives. 34 One of the main advantages of polyester thermoset resins is their resistance to moisture, impact, heat, and chemical agents, making them ideal for use in harsh environments. They are also relatively lightweight, which makes them easier to handle and transport.…”

Section: Methodsmentioning

confidence: 99%

Effects of fibre weight fraction on the mechanical properties of bio-Composite reinforced with Alfa fibres: Experimental and numerical investigation

Boukhoulda,

Bendine,

Boukhoulda

et al. 2023

Journal of Composite Materials

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This study is dedicated to conducting a comprehensive examination, both experimentally and numerically, to characterize the mechanical properties of a composite material composed of Alfa fibres and unsaturated polyester resin. In pursuit of this objective, we diligently prepared composite specimens in accordance with the ASTM D3379-75 standardization. The Alfa fibres used were prepares using a purely natural-based extraction technique, which retains approximately 78% of the composite's performance achieved through chemical treatment. The resulting composite consists of polyester resin reinforced with varying weight fractions of fibres, ranging from 0 to 18%.The test results of the manufactured bio-composite show that specimens with an 18% weight fraction offer a tensile strength of 49.749 MPa, whereas specimens with a 10% weight fraction exhibit a strength of 44.312 MPa. Additionally, the specimens with 18% fibre reinforcement exhibit a net increase in Young's modulus by 46% compared to the fibre-free composite, with Young's modulus ranging from 1469.66 MPa to 2726 MPa. When compared with composites based on fibre glass, the introduced bio-composite with 18% Alfa fibres exhibits similar stiffness to that of glass fibres. Additionally, the outcomes from the Finite Element Model (FEM) reveal a remarkable agreement with the experimental data, underscoring the practical applicability of the proposed methodology and tools for accurately simulating tensile tests in composite structures.

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Section: Methodsmentioning

confidence: 99%

Effects of fibre weight fraction on the mechanical properties of bio-Composite reinforced with Alfa fibres: Experimental and numerical investigation

Boukhoulda,

Bendine,

Boukhoulda

et al. 2023

Journal of Composite Materials

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“…With increasing environmental awareness, water-based PU has attracted attractive attention from both the industrial and academic spheres. Waterborne polyurethane (WPU) is widely used in adhesives, ink printing, coatings, and other fields for its nontoxicity, environmental friendliness, good toughness, and strong adhesion . However, there are few reports on WPU in the field of sound absorption.…”

Section: Introductionmentioning

confidence: 99%

Improved Sound Absorption Performance of Melamine/Waterborne Polyurethane Composite Foams Using Cyclic Freeze–Thawing

Shen,

Luo,

et al. 2024

ACS Appl. Polym. Mater.

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Adding functional fillers to achieve high sound absorption performance of polymeric foams has been proven to be an effective method, but controlling the distribution of fillers is an urgent problem to solve. In this work, waterborne polyurethane (WPU) was combined with melamine foam (MF) by adopting a cyclic freeze−thawing strategy. WPU was able to reorganize several times during the cyclic freeze−thaw process, which facilitated the construction of film-like WPU at the junction of MF skeletons and contributed to improving acoustic absorption performance. The formation of WPU films not only regulated the tortuosity and airflow resistance but also prolonged the sound wave propagation path inside the MF. As a result, the MF/WPU composite foams demonstrate excellent sound absorption performance, which shows a potential for use as high-performance sound absorption material.

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“…Given the current energy shortage crisis and growing environmental awareness of people, it is advisible to consider recycling sustainable resources as raw materials. Currently, there are mainly two kinds of sustainable raw materials for PU: valuable monomers from recycling waste polymers − and biomass resources. , Comparatively, PU synthesized from waste polymers is a promising production path featuring excellent mechanical and thermal endurance properties, environmental suitability, and good reprocess ability· Commonly, the renewable materials from glycolysis waste PET, mainly composed of diols, can be used as polyols, chain extenders, and even cosolvents. Notably, as a chain extender, it is crucial in the production of PU materials, causing the molecular chain to extend and offering large freedom to give multiple properties.…”

Section: Introductionmentioning

confidence: 99%

Sustainable and Renewable Microcross-Linked Polyurethane Pressure-Sensitive Adhesive from Waste Polyethylene Terephthalate

Pu,

Fang,

Zhou

et al. 2024

ACS Sustainable Chem. Eng.

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Recycling of sustainable raw materials from waste poly(ethylene terephthalate) is a promising production path compared to traditional raw materials sourced from limited fossil fuel resources. The renewable resources have potential in preparing polyurethane (PU) pressure-sensitive adhesive (PSA) with high activity and polarity for wide applications. In this work, a novel microcross-linked solvent-free PU adhesive based on a chain extender from glycolysis of waste polyethylene terephthalate (PET) was processed. The adhesive displayed stable adhesion on a variety of substrate materials including steel, plastic, glass, paper, and wood. The adhesive strength on wood substrates can be up to 1.69 MPa, and the 180 peeling strength is 2.75 N/2.5 cm, which is comparable to other PSA made from recyclable resources. The main component of PET glycolysis products (LGOP), bis(2-hydroxyethyl) terephthalate, can cause rapid expansion and crosslinking of the PU chain segment. The PU adhesive demonstrates molecular reconstruction capability, good healing, excellent ductility, and thermal stability due to the presence of the strong polarity and rigid aminoester group and cross-linking. Chang's viscoelastic windows of Chang's PU adhesives shifted to quadrant II under high shear pressures, and quadrant V could be used for general-purpose sensitive adhesives. This study presents an environmentally friendly method for producing PU adhesive by recycling waste PET as a key raw material for pressure-sensitive adhesive.

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A Review of Waterborne Polyurethane Coatings and Adhesives with Polyester Polyol from Poly(Ethylene Terephthalate) Waste

Cited by 6 publications

References 144 publications

Effects of fibre weight fraction on the mechanical properties of bio-Composite reinforced with Alfa fibres: Experimental and numerical investigation

Effects of fibre weight fraction on the mechanical properties of bio-Composite reinforced with Alfa fibres: Experimental and numerical investigation

Improved Sound Absorption Performance of Melamine/Waterborne Polyurethane Composite Foams Using Cyclic Freeze–Thawing

Sustainable and Renewable Microcross-Linked Polyurethane Pressure-Sensitive Adhesive from Waste Polyethylene Terephthalate

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